. >> there is an energy bill sponsored by bush and cheney. you know who voted for it? might never know. that one. you know who voted against it? me. >> eliot: a few of the unforgettable moments in debate history. some helped the candidate. some hurt the candidate and some had little impact at all. joining me now in denver to discuss the potential game changing moments in tomorrow's debate, wanna summers, national political reporter for politico and seth masket, chair of the university of denver political science department, a colorado state delegate and the author of "no middle ground," a perfect description of our politics these days, unfortunately. they were the memorable moment of 30 years of presidential debate, not one was substantive. it is only the zingers that matter? are we waiting for the one big it moment or is there going to be a philosophical engagement? >> the thing that i've found fascinating, there sure, there are the zingers that folks like you and i sit and talk about that i write about. you ask the 3% to 4% of people, they probably can't name more th